Rick Riordan shared (Book) universe (Percy Jackson, Kane Chronicles, etc.)

The book zoomed passing by portals until it stopped, before it a portal showed many different fights between monsters, teens, adults and Deities, some of whom hand a physical form where others used mortals as hosts, some Deities fornicated with mortals to create offspring to do their battles. It flew through the portal made itself unseeable and launched itself at the Earth. It crashed and waited, soon it was opened and the wielder glanced at the first page and grinned.

To the weilder of this book,

Know that you hold my most powerful creation, The Reality Book, with this anything you write in it will become reality. Yes reality will mild itself around what you have written only you as the owner will have knowledge about both realties. This means you are now my amusement little being. So go amuse and entertain me, I’m watching but will no longer be seen or heard from after this message.

Signed A Bored as fuck all powerful being.

The holder of the book grinned and couldn’t wait to try it out.

Who found the book (Deity, Mortal, Halfblood or something else)?

Are they a character

What will they do with it?

Who will be their first victim?

Please make all suggestions as detailed and as in-depth as possible, the more you give me the better the chapter I can write.

Feel free to add your own paths/Branches to any of my stories and I look forward to seeing what you write.